· 1989 Unverified Gravely Pro Master 18-H Gravely Pro Master 18-H — Front-mount mower · 18 hp. Reference specifications; pending source verification.
The Gravely Pro Master 18-H is a lawn tractor with an 18 hp rating, placing it towards the middle of its class in terms of power. Manufactured from 1989 to 1991, this model features a 2-cylinder petrol air-cooled engine, powering two-wheel drive via a hydrostatic transmission. It has a listed weight of 444 kg and is designed for use on areas of approximately 200 acres.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Richest spec table
38 rows
Production years
1989-1991
No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.
Specifications Description Maintenance Troubleshooting Ownership Reviews Q&A Docs & sources
Hover a source tag to verify UK metric US imperial
Manufacturer Gravely (a part of Ariens) Reference
Front-mount mower Reference
Two-wheel drive Reference
Disc brakes Reference
Open operator station. Reference
18HP Kohler 691cc 2-cyl gasoline Reference
Fuel tank 20.1 L Reference
Kohler M18 Reference
gasoline Reference
2-cylinder Reference
air-cooled horizontal-shaft horizontally-opposed Reference
Displacement 42.18 ci Reference
Bore/Stroke 79 x 70 mm Reference
Power (gross) 13.4 kW Reference
Starter electric Reference
Starter volts 12 Reference
Oil capacity 1.9 L Reference
hydrostatic Reference
Transmission Eaton 850 Reference
Type hydrostatic Reference
Gears infinite forward and reverse Reference
Oil capacity 5.7 L Reference
Front PTO independent Reference
Clutch electric Reference
Weight 444 kg Reference
Front tire 18x8.50-8 Reference
Rear tire 4.80/4.00-8 Reference
Lawn/turf front 18x8.50-8 Reference
Lawn/turf rear 4.80/4.00-8 Reference
Length 266 cm Reference
Height 121 cm Reference
50" front-mount mower deck Reference
60" front-mount mower deck Reference
Ground negative Reference
Charging amps 15 Reference
Battery volts 12 Reference
50" front-mount mower deck Reference
60" front-mount mower deck Reference
Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.
Partner tool · Free Working out if you can afford this tractor?
YourIncomeCalculator.com — free, HMRC-aligned take-home pay, self-employment & VAT calculators. No sign-up.
Calculate your take-home pay Recommended kit
Handy kit for owners Popular tractor and farm accessories owners pick up for machines like this.
Disclosure: some links on this page are affiliate links. If you buy through them we may earn a small commission — at no extra cost to you. Learn more .
Compare the Gravely Pro Master 18-H head-to-head Similar lawn tractors Gravely
18-G Unverified
18 hp
Gravely
18-H Unverified
18 hp
Gravely
818 Unverified
18 hp
Gravely
8183 Unverified
18 hp
Gravely
8171 Unverified
17 hp
Gravely
8179 Unverified
17 hp
Est. 2022
Request a dealer quote Free and no obligation. FarmFleets is independent — we’ll pass your enquiry to a partner dealer where available, and you can always reach the official Gravely network directly.
Request a quote Who it suits Operation size Up to 200 ac
Budget class Entry
Is it right for you? Operation size Under 200 ac 200–1,500 ac 1,500+ ac
Need a front loader? Yes No
Check fit Get alerts for this model Email me if a recall, service bulletin, or notable price move is recorded.
Spotted something off? Suggest a correction ->
